氧化高银醋酸纤维素膜的制备及性能

Preparation and properties of divalent silver oxide cellulose acetate membrane

首先采用液相氧化沉淀法制备氧化高银粉末,再通过相转化法制备氧化高银醋酸纤维素膜。研究了氧化高银质量分数对膜分离性能和抗菌性的影响。并通过X射线衍射(XRD)分析氧化高银相结构,并采用扫描电子显微镜(SEM)对氧化高银醋酸纤维素膜表面形貌进行表征;并通过膜性能评价仪测试膜的分离性能;抑菌圈法测试膜对枯草芽孢杆菌的抗菌性。结果表明:氧化高银最佳添加质量分数量为0.5%,制备的膜具有抗菌性,且其水通量达97.39 L/(m2·h)。

The divalent silver oxide powder is synthesized by liquid phase oxidizing sedimentation method,and then used to prepare divalent silver oxide cellulose acetate membrane through phase inversion. The effect of the concentration of divalent silver oxide on the separation and antibacterial properties of membranes is studied. The structure of the divalent silver oxide is characterized by X-ray diffraction（ XRD）,and the morphology of membrane is characterized by SEM. The results indicate that with the optimal amount of oxidized silver（ 0. 5%）,the corresponding membrane possesses good antibacterial properties and has water flux of 97. 39 L / m^2 h.